[Release] openai/openai-agents-python v0.15.3: v0.15.3

OpenAI Agents Python v0.15.3 is a maintenance release focused on bug fixes and stability improvements. Key fixes address MCP (Model Context Protocol) tool input schema mutations, JSON validation for non-object inputs, deterministic error handling for duplicate tools, and audio delta tolerance during format negotiation. The release includes documentation updates and expanded test coverage for edge cases.

Key Points

• •Fixed MCP tool input schema mutation issue to prevent unintended modifications to schema definitions
• •Added validation to reject non-object tool input JSON in MCP, improving input type safety
• •Made duplicate tool error handling deterministic for consistent and predictable behavior
• •Improved audio delta handling to tolerate deltas received before audio format negotiation completes
• •Expanded test coverage for overlapping tool response creation scenarios
• •Updated documentation to reflect recent changes and improvements
• •Maintained backward compatibility while addressing critical stability issues

Concepts